740890069 has 4 divisors (see below), whose sum is σ = 741077100. Its totient is φ = 740703040.

The previous prime is 740890063. The next prime is 740890097. The reversal of 740890069 is 960098047.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 98267569 + 642622500 = 9913^2 + 25350^2 .

It is a cyclic number.

It is not a de Polignac number, because 740890069 - 2³ = 740890061 is a prime.

It is a super-2 number, since 2×740890069² = 1097836188685649522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740890061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87442 + ... + 95539.

It is an arithmetic number, because the mean of its divisors is an integer number (185269275).

Almost surely, 2^740890069 is an apocalyptic number.

It is an amenable number.

740890069 is a deficient number, since it is larger than the sum of its proper divisors (187031).

740890069 is a wasteful number, since it uses less digits than its factorization.

740890069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187030.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 740890069 is about 27219.2958946406. The cubic root of 740890069 is about 904.8666690017.

The spelling of 740890069 in words is "seven hundred forty million, eight hundred ninety thousand, sixty-nine".